天线相位中心的精确优化算法

doi:10.3969/j.issn.1001-2400.2017.05.011

Abstract

Abstract:

The antenna phase center (APC) is very important for the positioning of the antenna and the accuracy of the measurement. This paper presents an optimization method to calculate the phase center accurately. Suppose the phase center is at some known point, a so-called projection sphere can be drawn with this point as the center, and all the measured points can be projected onto this sphere. Then the phases of the projected points are obtained by those of the former, and an objective function is defined by the sum of squares of the differences between these phases and their average value. Finally, the conjugate gradient method (CG) or the genetic Algorithm (GA) can be used to find out the coordinate of the phase center. Instead of measuring the antenna phase repeatedly, this new method can determine the coordinates of the phase center accurately in one single operation. Its accuracy is validated by the numerical results of a dipole and a horn antenna.

Key words: antenna phase center, optimization, conjugate gradient method(CG), genetic algorithms(GA)

YUAN Haobo;WU Zhengguo;HOU Jianqiang;DANG Xiaojie. Accurate optimization algorithm for the antenna phase center[J].Journal of Xidian University, 2017, 44(5): 64-68.

References

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Accurate optimization algorithm for the antenna phase center

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